Apparatus for bleaching textile fibers with a gaseous current, such as ozonized air



Sept. 15, 1931. E. CRESPI ET AL 1,323,352

APPARATUS FOR BLEACHING TEXTILE FIBERS WITH A GASEOUS CURRENT, SUCH AS OZONIZED AIR Original Filed NOV. 30, 1926 3 Sheets-Sheet l fi Q I. I

Emilio Cresp Mamba O Q INVENTORS mu) Attorney Sept. 15, 1931. E. vczmzsw ET AL 1,823,352

APPARATUS FOR BLEACHING TEXTILE FIBERS WITH A GASEOUS CURRENT, SUCH AS OZONIZED AIR Original Filed Nov. 30, 1926 3 Sheets-Sheet 2 t g Q s s i a i e a a k a I E Z E 5% I .w n m Q wmkmmwmrmwm w EmIh o Crgspk Vkaflus Paul On'o INVENTQR5 x MAM/L 1114A. Attorney.

Sept. 15, 1931. E CRESPI ET AL APPARATUS FOR BLEACHING TEXTILE FIBERS WITH A GASEOUS CURRENT, SUCH AS OZONIZE-D AIR 3 Sheets-Sheet 3 Criginal Filed Nov. 30, 1926 Emma P Mufius o.u\ OTTO VENTo g,

M Mturum fig! 7 Patented seat.- 15, 1931 'UNITED STAT S PATENT OFFICE mnnro cmr, or catsrr-sna-rmna, mart, m mama not one, or rams,

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arraaa'rus roa nnaacnme 'rnxr prlglnal application The object of the present invention is to provide improved means and apparatus for exposing textiles to gaseous bleaching currents, for example, to currents of ozonized air, for obtaining a uniform distribution of the gaseous current over the whole of the material to be bleached for providing for a l continuous and practical operation, and, at

m for the treatment the same time, utijlizing'all the gas supplied and paying due regardto. the health of the workmen engaged in this work.

An arrangement according to the preferred form of the invention is shown in the accompanying drawings, wherein Fig. 1 is a longitudinal axial section of an apparatus accor ing to the invention for the treatment of pieces of textile; I I n Fig. 2 is artly an elevation and partly a longitudinalvertical section of the chamber of the textile pieces;

Fig. 3 is a part plan and part horizontal section of this chamber; and

Fig. 4 is a transverse vertical section of the chamber.

This machine'comprises an autoclave 194 in which the pieces or strip of textile 195 is boiled, at an approximate pressure of three atmospheres, for about seven hours. The boiling liquid is preferably a solution made with six per cent melted caustic soda and one per cent of sodium sulforicinate. On leaving the autoclave the pieces of textile pass through an opening mechanism 196 and then to a folding means 197, by which the material is folded into a deposit 198.' The 49 another folding 5 to another folding means 197 the material placed on rods 119 fitted 1n the upper part of material thenpasses into a vessel 200 providing an acid bath, then into a vessel 201 where it is washed with water, and then into an ozonizing chamber 202, whence it passes into device 197 after which a deposit 198 of folded material is formed. The bleached textiles then pass into a vessel 203 where soaping and washing is efiected, then to a drying apparatus 204, and finally finally being formed as a deposit 198.

The ozone necessary for the bleaching operation is produced by an ozonizer 207 supplied by a fan 208 with air dried in the 0 5o desiccator 209; the ozonized air being measmn rnmns WITH A caucus cuanmrr, soon as ozonrznn m i ma November so, 1926, Serial No. 161,785, and in France February a, 1926. Divide? and this applleatlonflled June an, 1929. Serial No. 872,709. 1

ured in meter 206 and conveyed .through pipe 205 nto the ozonizing chamber 202. This ozonizing chamber has various characteristic features described hereinbelow.

In the first place an improved rocess for bleaching textiles is utilized in this chamber, the process being characterized in that-the gaseous ozonized mixture acts on the pieces of textile, suspended in such a way as to form adjacent folds, and penetrates between the folds to efi'ectbleaching of the material.

The invention also comprises an ozonizing chamber for the application of this improved process or of other similar process and. characterized by double sides forming a free space into which the gaseous ozonized mixture is admitted and from which the mixture rushes into the interior of the chamber, wherein the pieces of textile are suspended and bleached.

The ozonizin chamber (Fi s. 2 to 4) consists of a cham er 101 of considerable len h havin two brick walls 102 and 103 forming a dou le wall and leaving a free space 104 between them. The inner wall 103, constructed, for exam le, of enamel bricks, is provided with openings 105 by which the free space 104 is brought into communication with the inner bleaching chamber. There are two partitions 106' 106 dividing the free space 104 into two separate parts 104 104. to which are connected the two conduits 117 and- 117 for the supply of ozonized air. 'Th'ese'two conduits are identical; each of them com prises. an intake pipe 110' 110 connected to the ozone generator and provided with'a control valve 111' 111 and also an exit pipe-112' 112 provided with valve 113' 113 A distributing pipe 115' 115 with nozzles 116 116?.is connected between the intake pipe 110' 110 and the exit pipe 112' 112 These nozzles 116' 116 lead to the free spaces 104 104 The piece of textile 118 for treatment is l The apparatus described is operated as folows:-

The valves 111 and 113 are opened, the

' a nsaaasa through the chamber acts on the piece of textile.

2. In an apparatus for bleaching textiles valves 113' and 1 11 remaining shut; the with a aseous mixture, such as ozonized air, a 5 ozonized mixture comes from the ozone gen.- the com ination of a double walled chamber I erator through members 110', 115'- and116' and penetrates into the-part 104' of thespace @104. This gaseous mixture passes throu h the openings 105 provided between the brie of wall 103, penetrating into the inner treatment chamber and easily filterin between the folds of the textile sheet 118, an this produces regular bleaching of the piece. Finally, the gaseous mixture, when .deprived of t e greater part of its ozone, makes its esca e through the orifices 105 in the part 104 oft e space 104, the nozzles 116', the ipe 115', the cock 113" and the pipe 112. e arrows 125 ,of Fig. 3 show the direction of this circulagq tion. a

It will be seen that the nozzles'l16' 116', being regularly distributedin the vertical wall 102, as shown in Fig. 2, and the orifices 105, being themselves re larly arranged in as all the surface of this wal a very regular dis.-

tribution of the gaseousozonized mixture is produced inside the treatment chamber and consequently over all the surfaceof the piece of textile 118. This piece is thus bleached ina perfectly regular way.

The direction of flow of the gaseous ozonized'mixturein the apparatus can be changed, by shutting valves 111' 113' and o ning valves 111 113 the aseous ozonize mix 85 ture' then flows throug the plant in a direc tion opposite to arrows 125 in the way already described in detail.

Numerous alterations can be made in the aforesaid plant, which is given as an exam- 40 ple. In particular, the inner wall 103 and having a Space between said double walls, means n am in the free space into two parts, means provi g communication between said free space and said chamber, ipin communicatwith the two parts 0 said va ves fitted on said piping to reverse the directionof flow of the gaseous mixture through the said chamber. I

In' testimony whereof we alfix our signatures.

EMILIO CRESPI.

MARIUS PAUL OTTO.

the spaces 104' 104 can be omitted, the nozzles 116 116 opening directly into the inner chamber where the piece of textile 118 is suspended. By this means the construction of the lant is simplified, but such a perfect distn ution of the ozonized mixture cannot then be obtained.

The invention evidently comprises the aforesaid appliances whatever gaseous mix--- ture maybe used for bleaching the textiles.

What we claim as our invention, and desire to secure by Letters Patent is 1. In an apparatus for bleaching textiles by a gaseous mixture, such as ozonized air,

the combination" of a double walled chamber with a free space between said double walls,

means in said chamber for supportin the iece of textile to be treated, partitions ividmg the free space into two parts, means providing communication between said free space and said chamber, pipes for conveying the gaseous mixture into one of the parts of the free space, and pipes for discharging the gaseous mixture from the second part of said free space whereby the gaseousmixture passes chamber for supportin the. pieceof textile to be treated,- partitions 'videe space and Lao 

